1/*
2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/* From include/crypto/poly1305.h */
11
12#define POLY1305_BLOCK_SIZE  16
13
14typedef struct poly1305_context POLY1305;
15
16/* From crypto/poly1305/poly1305_local.h */
17
18typedef void (*poly1305_blocks_f) (void *ctx, const unsigned char *inp,
19                                   size_t len, unsigned int padbit);
20typedef void (*poly1305_emit_f) (void *ctx, unsigned char mac[16],
21                                 const unsigned int nonce[4]);
22
23struct poly1305_context {
24    double opaque[24];  /* large enough to hold internal state, declared
25                         * 'double' to ensure at least 64-bit invariant
26                         * alignment across all platforms and
27                         * configurations */
28    unsigned int nonce[4];
29    unsigned char data[POLY1305_BLOCK_SIZE];
30    size_t num;
31    struct {
32        poly1305_blocks_f blocks;
33        poly1305_emit_f emit;
34    } func;
35};
36
37int ossl_poly1305_update(void *vctx, const void *buf, u_int len);
38void Poly1305_Init(POLY1305 *ctx, const unsigned char key[32]);
39void Poly1305_Update(POLY1305 *ctx, const unsigned char *inp, size_t len);
40void Poly1305_Final(POLY1305 *ctx, unsigned char mac[16]);
41